1ab26c6914f25f2f13fe91ce55b2bb5eb4d33c3a
[linux-3.10.git] / arch / arm / mach-pxa / lubbock.c
1 /*
2  *  linux/arch/arm/mach-pxa/lubbock.c
3  *
4  *  Support for the Intel DBPXA250 Development Platform.
5  *
6  *  Author:     Nicolas Pitre
7  *  Created:    Jun 15, 2001
8  *  Copyright:  MontaVista Software Inc.
9  *
10  *  This program is free software; you can redistribute it and/or modify
11  *  it under the terms of the GNU General Public License version 2 as
12  *  published by the Free Software Foundation.
13  */
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/platform_device.h>
18 #include <linux/sysdev.h>
19 #include <linux/major.h>
20 #include <linux/fb.h>
21 #include <linux/interrupt.h>
22 #include <linux/mtd/mtd.h>
23 #include <linux/mtd/partitions.h>
24
25 #include <linux/spi/spi.h>
26 #include <linux/spi/ads7846.h>
27 #include <asm/arch/pxa2xx_spi.h>
28
29 #include <asm/setup.h>
30 #include <asm/memory.h>
31 #include <asm/mach-types.h>
32 #include <asm/hardware.h>
33 #include <asm/irq.h>
34 #include <asm/sizes.h>
35
36 #include <asm/mach/arch.h>
37 #include <asm/mach/map.h>
38 #include <asm/mach/irq.h>
39 #include <asm/mach/flash.h>
40
41 #include <asm/hardware/sa1111.h>
42
43 #include <asm/arch/pxa-regs.h>
44 #include <asm/arch/lubbock.h>
45 #include <asm/arch/udc.h>
46 #include <asm/arch/irda.h>
47 #include <asm/arch/pxafb.h>
48 #include <asm/arch/mmc.h>
49
50 #include "generic.h"
51
52
53 #define LUB_MISC_WR             __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
54
55 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
56 {
57         unsigned long flags;
58
59         local_irq_save(flags);
60         LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
61         local_irq_restore(flags);
62 }
63 EXPORT_SYMBOL(lubbock_set_misc_wr);
64
65 static unsigned long lubbock_irq_enabled;
66
67 static void lubbock_mask_irq(unsigned int irq)
68 {
69         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
70         LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
71 }
72
73 static void lubbock_unmask_irq(unsigned int irq)
74 {
75         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
76         /* the irq can be acknowledged only if deasserted, so it's done here */
77         LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
78         LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
79 }
80
81 static struct irqchip lubbock_irq_chip = {
82         .ack            = lubbock_mask_irq,
83         .mask           = lubbock_mask_irq,
84         .unmask         = lubbock_unmask_irq,
85 };
86
87 static void lubbock_irq_handler(unsigned int irq, struct irqdesc *desc,
88                                 struct pt_regs *regs)
89 {
90         unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
91         do {
92                 GEDR(0) = GPIO_bit(0);  /* clear our parent irq */
93                 if (likely(pending)) {
94                         irq = LUBBOCK_IRQ(0) + __ffs(pending);
95                         desc = irq_desc + irq;
96                         desc_handle_irq(irq, desc, regs);
97                 }
98                 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
99         } while (pending);
100 }
101
102 static void __init lubbock_init_irq(void)
103 {
104         int irq;
105
106         pxa_init_irq();
107
108         /* setup extra lubbock irqs */
109         for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
110                 set_irq_chip(irq, &lubbock_irq_chip);
111                 set_irq_handler(irq, do_level_IRQ);
112                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
113         }
114
115         set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
116         set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
117 }
118
119 #ifdef CONFIG_PM
120
121 static int lubbock_irq_resume(struct sys_device *dev)
122 {
123         LUB_IRQ_MASK_EN = lubbock_irq_enabled;
124         return 0;
125 }
126
127 static struct sysdev_class lubbock_irq_sysclass = {
128         set_kset_name("cpld_irq"),
129         .resume = lubbock_irq_resume,
130 };
131
132 static struct sys_device lubbock_irq_device = {
133         .cls = &lubbock_irq_sysclass,
134 };
135
136 static int __init lubbock_irq_device_init(void)
137 {
138         int ret = sysdev_class_register(&lubbock_irq_sysclass);
139         if (ret == 0)
140                 ret = sysdev_register(&lubbock_irq_device);
141         return ret;
142 }
143
144 device_initcall(lubbock_irq_device_init);
145
146 #endif
147
148 static int lubbock_udc_is_connected(void)
149 {
150         return (LUB_MISC_RD & (1 << 9)) == 0;
151 }
152
153 static struct pxa2xx_udc_mach_info udc_info __initdata = {
154         .udc_is_connected       = lubbock_udc_is_connected,
155         // no D+ pullup; lubbock can't connect/disconnect in software
156 };
157
158 static struct platform_device lub_audio_device = {
159         .name           = "pxa2xx-ac97",
160         .id             = -1,
161 };
162
163 static struct resource sa1111_resources[] = {
164         [0] = {
165                 .start  = 0x10000000,
166                 .end    = 0x10001fff,
167                 .flags  = IORESOURCE_MEM,
168         },
169         [1] = {
170                 .start  = LUBBOCK_SA1111_IRQ,
171                 .end    = LUBBOCK_SA1111_IRQ,
172                 .flags  = IORESOURCE_IRQ,
173         },
174 };
175
176 static struct platform_device sa1111_device = {
177         .name           = "sa1111",
178         .id             = -1,
179         .num_resources  = ARRAY_SIZE(sa1111_resources),
180         .resource       = sa1111_resources,
181 };
182
183 static struct resource smc91x_resources[] = {
184         [0] = {
185                 .name   = "smc91x-regs",
186                 .start  = 0x0c000c00,
187                 .end    = 0x0c0fffff,
188                 .flags  = IORESOURCE_MEM,
189         },
190         [1] = {
191                 .start  = LUBBOCK_ETH_IRQ,
192                 .end    = LUBBOCK_ETH_IRQ,
193                 .flags  = IORESOURCE_IRQ,
194         },
195         [2] = {
196                 .name   = "smc91x-attrib",
197                 .start  = 0x0e000000,
198                 .end    = 0x0e0fffff,
199                 .flags  = IORESOURCE_MEM,
200         },
201 };
202
203 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
204  * you can select it to replace the ucb1400 by switching the touchscreen cable
205  * (to J5) and poking board registers (as done below).  Else it's only useful
206  * for the temperature sensors.
207  */
208 static struct resource pxa_ssp_resources[] = {
209         [0] = {
210                 .start  = __PREG(SSCR0_P(1)),
211                 .end    = __PREG(SSCR0_P(1)) + 0x14,
212                 .flags  = IORESOURCE_MEM,
213         },
214         [1] = {
215                 .start  = IRQ_SSP,
216                 .end    = IRQ_SSP,
217                 .flags  = IORESOURCE_IRQ,
218         },
219 };
220
221 static struct pxa2xx_spi_master pxa_ssp_master_info = {
222         .ssp_type       = PXA25x_SSP,
223         .clock_enable   = CKEN3_SSP,
224         .num_chipselect = 0,
225 };
226
227 static struct platform_device pxa_ssp = {
228         .name           = "pxa2xx-spi",
229         .id             = 1,
230         .resource       = pxa_ssp_resources,
231         .num_resources  = ARRAY_SIZE(pxa_ssp_resources),
232         .dev = {
233                 .platform_data  = &pxa_ssp_master_info,
234         },
235 };
236
237 static int lubbock_ads7846_pendown_state(void)
238 {
239         /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
240         return 0;
241 }
242
243 static struct ads7846_platform_data ads_info = {
244         .model                  = 7846,
245         .vref_delay_usecs       = 100,          /* internal, no cap */
246         .get_pendown_state      = lubbock_ads7846_pendown_state,
247         // .x_plate_ohms                = 500,  /* GUESS! */
248         // .y_plate_ohms                = 500,  /* GUESS! */
249 };
250
251 static void ads7846_cs(u32 command)
252 {
253         static const unsigned   TS_nCS = 1 << 11;
254         lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
255 }
256
257 static struct pxa2xx_spi_chip ads_hw = {
258         .tx_threshold           = 1,
259         .rx_threshold           = 2,
260         .cs_control             = ads7846_cs,
261 };
262
263 static struct spi_board_info spi_board_info[] __initdata = { {
264         .modalias       = "ads7846",
265         .platform_data  = &ads_info,
266         .controller_data = &ads_hw,
267         .irq            = LUBBOCK_BB_IRQ,
268         .max_speed_hz   = 120000 /* max sample rate at 3V */
269                                 * 26 /* command + data + overhead */,
270         .bus_num        = 1,
271         .chip_select    = 0,
272 },
273 };
274
275 static struct platform_device smc91x_device = {
276         .name           = "smc91x",
277         .id             = -1,
278         .num_resources  = ARRAY_SIZE(smc91x_resources),
279         .resource       = smc91x_resources,
280 };
281
282 static struct resource flash_resources[] = {
283         [0] = {
284                 .start  = 0x00000000,
285                 .end    = SZ_64M - 1,
286                 .flags  = IORESOURCE_MEM,
287         },
288         [1] = {
289                 .start  = 0x04000000,
290                 .end    = 0x04000000 + SZ_64M - 1,
291                 .flags  = IORESOURCE_MEM,
292         },
293 };
294
295 static struct mtd_partition lubbock_partitions[] = {
296         {
297                 .name =         "Bootloader",
298                 .size =         0x00040000,
299                 .offset =       0,
300                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
301         },{
302                 .name =         "Kernel",
303                 .size =         0x00100000,
304                 .offset =       0x00040000,
305         },{
306                 .name =         "Filesystem",
307                 .size =         MTDPART_SIZ_FULL,
308                 .offset =       0x00140000
309         }
310 };
311
312 static struct flash_platform_data lubbock_flash_data[2] = {
313         {
314                 .map_name       = "cfi_probe",
315                 .parts          = lubbock_partitions,
316                 .nr_parts       = ARRAY_SIZE(lubbock_partitions),
317         }, {
318                 .map_name       = "cfi_probe",
319                 .parts          = NULL,
320                 .nr_parts       = 0,
321         }
322 };
323
324 static struct platform_device lubbock_flash_device[2] = {
325         {
326                 .name           = "pxa2xx-flash",
327                 .id             = 0,
328                 .dev = {
329                         .platform_data = &lubbock_flash_data[0],
330                 },
331                 .resource = &flash_resources[0],
332                 .num_resources = 1,
333         },
334         {
335                 .name           = "pxa2xx-flash",
336                 .id             = 1,
337                 .dev = {
338                         .platform_data = &lubbock_flash_data[1],
339                 },
340                 .resource = &flash_resources[1],
341                 .num_resources = 1,
342         },
343 };
344
345 static struct platform_device *devices[] __initdata = {
346         &sa1111_device,
347         &lub_audio_device,
348         &smc91x_device,
349         &lubbock_flash_device[0],
350         &lubbock_flash_device[1],
351         &pxa_ssp,
352 };
353
354 static struct pxafb_mach_info sharp_lm8v31 __initdata = {
355         .pixclock       = 270000,
356         .xres           = 640,
357         .yres           = 480,
358         .bpp            = 16,
359         .hsync_len      = 1,
360         .left_margin    = 3,
361         .right_margin   = 3,
362         .vsync_len      = 1,
363         .upper_margin   = 0,
364         .lower_margin   = 0,
365         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
366         .cmap_greyscale = 0,
367         .cmap_inverse   = 0,
368         .cmap_static    = 0,
369         .lccr0          = LCCR0_SDS,
370         .lccr3          = LCCR3_PCP | LCCR3_Acb(255),
371 };
372
373 #define MMC_POLL_RATE           msecs_to_jiffies(1000)
374
375 static void lubbock_mmc_poll(unsigned long);
376 static irqreturn_t (*mmc_detect_int)(int, void *, struct pt_regs *);
377
378 static struct timer_list mmc_timer = {
379         .function       = lubbock_mmc_poll,
380 };
381
382 static void lubbock_mmc_poll(unsigned long data)
383 {
384         unsigned long flags;
385
386         /* clear any previous irq state, then ... */
387         local_irq_save(flags);
388         LUB_IRQ_SET_CLR &= ~(1 << 0);
389         local_irq_restore(flags);
390
391         /* poll until mmc/sd card is removed */
392         if (LUB_IRQ_SET_CLR & (1 << 0))
393                 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
394         else {
395                 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data, NULL);
396                 enable_irq(LUBBOCK_SD_IRQ);
397         }
398 }
399
400 static irqreturn_t lubbock_detect_int(int irq, void *data, struct pt_regs *regs)
401 {
402         /* IRQ is level triggered; disable, and poll for removal */
403         disable_irq(irq);
404         mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
405
406         return mmc_detect_int(irq, data, regs);
407 }
408
409 static int lubbock_mci_init(struct device *dev,
410                 irqreturn_t (*detect_int)(int, void *, struct pt_regs *),
411                 void *data)
412 {
413         /* setup GPIO for PXA25x MMC controller */
414         pxa_gpio_mode(GPIO6_MMCCLK_MD);
415         pxa_gpio_mode(GPIO8_MMCCS0_MD);
416
417         /* detect card insert/eject */
418         mmc_detect_int = detect_int;
419         init_timer(&mmc_timer);
420         mmc_timer.data = (unsigned long) data;
421         return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
422                         SA_SAMPLE_RANDOM, "lubbock-sd-detect", data);
423 }
424
425 static int lubbock_mci_get_ro(struct device *dev)
426 {
427         return (LUB_MISC_RD & (1 << 2)) != 0;
428 }
429
430 static void lubbock_mci_exit(struct device *dev, void *data)
431 {
432         free_irq(LUBBOCK_SD_IRQ, data);
433         del_timer_sync(&mmc_timer);
434 }
435
436 static struct pxamci_platform_data lubbock_mci_platform_data = {
437         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
438         .detect_delay   = 1,
439         .init           = lubbock_mci_init,
440         .get_ro         = lubbock_mci_get_ro,
441         .exit           = lubbock_mci_exit,
442 };
443
444 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
445 {
446         unsigned long flags;
447
448         local_irq_save(flags);
449         if (mode & IR_SIRMODE) {
450                 LUB_MISC_WR &= ~(1 << 4);
451         } else if (mode & IR_FIRMODE) {
452                 LUB_MISC_WR |= 1 << 4;
453         }
454         local_irq_restore(flags);
455 }
456
457 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
458         .transceiver_cap  = IR_SIRMODE | IR_FIRMODE,
459         .transceiver_mode = lubbock_irda_transceiver_mode,
460 };
461
462 static void __init lubbock_init(void)
463 {
464         int flashboot = (LUB_CONF_SWITCHES & 1);
465
466         pxa_set_udc_info(&udc_info);
467         set_pxa_fb_info(&sharp_lm8v31);
468         pxa_set_mci_info(&lubbock_mci_platform_data);
469         pxa_set_ficp_info(&lubbock_ficp_platform_data);
470
471         lubbock_flash_data[0].width = lubbock_flash_data[1].width =
472                 (BOOT_DEF & 1) ? 2 : 4;
473         /* Compensate for the nROMBT switch which swaps the flash banks */
474         printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
475                flashboot?"Flash":"ROM", flashboot);
476
477         lubbock_flash_data[flashboot^1].name = "application-flash";
478         lubbock_flash_data[flashboot].name = "boot-rom";
479         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
480
481         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
482 }
483
484 static struct map_desc lubbock_io_desc[] __initdata = {
485         {       /* CPLD */
486                 .virtual        =  LUBBOCK_FPGA_VIRT,
487                 .pfn            = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
488                 .length         = 0x00100000,
489                 .type           = MT_DEVICE
490         }
491 };
492
493 static void __init lubbock_map_io(void)
494 {
495         pxa_map_io();
496         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
497
498         /* SSP data pins */
499         pxa_gpio_mode(GPIO23_SCLK_MD);
500         pxa_gpio_mode(GPIO25_STXD_MD);
501         pxa_gpio_mode(GPIO26_SRXD_MD);
502
503         /* This enables the BTUART */
504         pxa_gpio_mode(GPIO42_BTRXD_MD);
505         pxa_gpio_mode(GPIO43_BTTXD_MD);
506         pxa_gpio_mode(GPIO44_BTCTS_MD);
507         pxa_gpio_mode(GPIO45_BTRTS_MD);
508
509         /* This is for the SMC chip select */
510         pxa_gpio_mode(GPIO79_nCS_3_MD);
511
512         /* setup sleep mode values */
513         PWER  = 0x00000002;
514         PFER  = 0x00000000;
515         PRER  = 0x00000002;
516         PGSR0 = 0x00008000;
517         PGSR1 = 0x003F0202;
518         PGSR2 = 0x0001C000;
519         PCFR |= PCFR_OPDE;
520 }
521
522 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
523         /* Maintainer: MontaVista Software Inc. */
524         .phys_io        = 0x40000000,
525         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
526         .map_io         = lubbock_map_io,
527         .init_irq       = lubbock_init_irq,
528         .timer          = &pxa_timer,
529         .init_machine   = lubbock_init,
530 MACHINE_END